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Documentation for the new "contra" attribute on propeller tags.

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andy 2004-12-13 23:49:03 +00:00
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Docs/README.yasim
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@ -208,6 +208,14 @@ propeller: A propeller. This element requires an engine subtag.
gear-ratio: The factor by which the engine RPM is multiplied
to produce the propeller RPM. Optional (defaults
to 1.0).
contra: When set (contra="1"), this indicates that the
propeller is a contra-rotating pair. It
will not contribute to the aircraft's net
gyroscopic moment, nor will it produce
asymmetric torque on the aircraft body.
Asymmetric slipstream effects, when
implemented, will also be zero when this is
set.
piston-engine: A piston engine definition. This must be a subelement
of an enclosing <propeller> tag.